function turnDW(fileSize){
	if(fileSize==0){
		return "-";
	}
	var dw = "B";
	if(fileSize>1024){
		fileSize = parseInt((fileSize/1024)*10)/10;
		dw = "KB";
	}
	if(fileSize>1024){
		fileSize = parseInt((fileSize/1024)*10)/10;
		dw = "MB";
	}
	if(fileSize>1024){
		fileSize = parseInt((fileSize/1024)*10)/10;
		dw = "GB";
	}
	return fileSize + dw;
}